Control mechanism



Aug. 3,1926. 1,594,91fir1 E. J. ARMSTRONG common MECHANISM Filed April 5,1924 4' sheets-mast 1 I E. .J. ARMSTRONG CONTROL MECHANISM Filed April 5 4 Sheets-Sheet 5 Elm 0mm mmmms Aug. 3 IQZfk E1. .1. ARMEJTRmNm CONTROL!- MECHANISM Filed April 5, 92 4- Sheets--$heet L EDWIN"J-. immsflmoiqmeeemm; P NNsYE ANIAQ ASSIGNORITOERJYIE STEAM slim/En f COMIAHY, OF ERIEQFENNSYLVANIA, A, conrozm'flen oe P NNSYL M eeN'meL MECHAR S K V I Agiplicetioii filed April 5,

- Wen the hindljri f }iQ W e r SW 5, 'pm ticuiei'ly wl'iere the differerit elements of 5 the operator standing in the single pesitie i 'jceuld readily, aceompiish the Various 'oper atio ns which. it i s' des'ii'ahi'e ;to perform; Thisis particularly sq with rel-'atibn t the edfitrei' of the erowdingfand holding ofsthe 'ShOVl.

the shaft are driven item the sem'e se'ii 'ce of power there has been some ddficulty in so simplifying the centrol mechanisms that dipper :stiek, 1 The pi'eeene'inventien is .di-

reeted f0 simplifying this co ti'oLfl Other 'defeils mid fentutes' of the invenfiioiinvili agipemirdhr'i-he specification and claims;-

"The iny'ent-ien' is illustrateii in the aecom 'panying drawings as f0110ws;-

-- Fig. 1 shewsh side elevzitenf of a power '2 Fig; 2 :i-pIanWieW-Qfihe seme- Fig, a plan View. 'of' the crowding. e1

gihe actuating drum. showing the brake Fig. (in section on the line in Fig.3." 1 Fig. 5 9; side/elevation, partly misectlon,

ef the valve mechaiiism eon-tiolling the clutches; Yeoi'meeted, w th. the drum actuatv ihgr, "the dipperetickl- 40.- arslek on the dipper-stick, 9a geafeperab 'ing'pn iiie reek ,l a shipper 'sha'ft earry .ing the gear and "11 a; bearing ior'the Ishipper eimfb carried by; the b'bm'. The

' sect! n' (in-the Erie-6+6 in Fig.5, Fig." 7 r1 eentirai Secfiei'i fnhrei gh the valve mechariis 1 Fig. 8 'uYs'ii 'iilar section showing. a di fe1'- eente posit-ien of the fvalVe-u 1 I I I 9; a section 011 the'iine 9'-9 in Fig. 8.1 [Fig- 10 asideeievatio'n of the hengiegm -85 ti ol lever for? thehyak e"valve;

platform, 6 t1'ie dippe i stick, '7 the dipper, 8

shipper shaft is driven through a eab1e'12 Whieh ifs wounclend unwound-from the-drum 1'3 mounted-e1i the-sheft,,10.j The ea-ble 12 extende-t'of a d1'1.i;r11 -]A (an-the platform, one-.- end being? woiinvzi on this drum es the othefi irnyqlihiefi" eorrespqndingto the movement L1 an endlviewef the guide plhng en llma 'ksjthe te -n' tztble,' 0'1 piatfer'm, 2- the yt -uek; fr'ame', .3 the driving-wheels, 4 the" i924; Seriel m. me m.

.tiiej dippen hid t e a jciru m 18 on the ,pizit foi'm. '7 -The t etoiuiwhlch as shown is an expim sweengme 19, 1S 'nounted on he piaitfosm.

The motor has a 'pqwein'w heel 20. A; belt I 21-" take the 1Je\Ve1 1 fr om the Wheel and communicates it to ii pulley fThe'pul; ley 22- is'mounted on 21' shaft 23 mounted 29 ie mom t 'ed in beal ings 32yand 33 on the .posts24 and--26 respectively.

"Fiuid actuated.- clutches, 37 and 38 are mounted in the Shafts 23 and'31 end leek -0i"-"re1eaeegar 39 and 4:0 respectively" with theshaftjs 2331161 3L Gears 39 and {i0 mesh width a gear &1 fixed on thejsheft 29. The V gezuflweb, lmsepe irigs'fi2 which are adapted ,to engage' project-ions 4:3 0 n the 'drum so that the gear. may Fae-"moved into and joutfofengagement with the drum-by am,

e'ndwise :moigement ofthe gear 41 and this is aeeol'i piisiied by the sliding 'ofthe shaft" 29 through a lever 29*,fl1eflrum being re- 'f-aie'ed in its position by a grooved. 00112.1 14 intethe gre'ove 0f whieh extends a .fim gel-I4.-

A bevelled geai' 445 is locked iviihthe gear Ligand isjbmwnto mesh-ivith-e gear 45 as theshaft is :meved carrying thec1uteh p150- j ectiens43 oiitef the epeniiigs 42; The geer- 47 'iselso'fixed on the shaft '46 and 'r'neshee with bevelled gear- L8. The bevelled gem Aejis fixed; oii-e she-ft. .49 extending down- "Wat'dly: though the pivotal eente'roft-he machine. bevelled 'gear '50 is fixed on the leweii'end efthe shaft 49 andinesheswith A-bevelled gee a bevelled geafi-511 The jbeizelied gear 51 is fixed mi efshaft 52* A bevelled gear 53." is also fixeii 'on the-shaft 52fzimi meshes wiilhlzi .gear flThe bevelled gee: fiie fixed-en the axle and the machine givenfireetien'throughthisirieeheiiism flit) adapted to be thrown into engagement with .the drum 18'by means of the usual air controlled clutch 57. The clutch is controlled by a valve 58. The valve is controlled from a link 59 extending to a control lever 60. A circle gear 61 is mounted on the truck 2 and a pinion'62 meshes with the gear 61 and moves with a gear 63. The gear 63 meshes with a gear 64. The gear 64 is carried by a shaft 65 extending upwardly through the platform. A bevelled gear 66 is fixed on the shaft 65 and meshes with a gear 67. The gear 67 is fixed on a shaft 68 carried in bearings 69. A gear 70 is also fixed on the shaft68. Gears 71 and 72 mesh with the gears 70.

Air clutches 73 and 74 are adapted to lock the gears 71 and 72 with the shafts23 and 31. The air clutches are controlled by a. valve '75 controlling the air through pipes 73 and 74 leading through the shafts to the clutphes. -The valve 75 is controlled by a 'ha ndi'lever-75 through a link 75. An air pdmp 76 is driven from the power shaft of the engine and delivers air to a supply tank 77 and from the supply tank to the valves 75 and 58, The air is also delivered to a controlling valve 78 controlling the clutches .37 and 38 by way of a supply pipe 80. The controlling valve 78 operates on a seat 79 and is mounted in a chest 79. It has ports 81, 82 and 83. The port 83 is an exhaust port. The port'81 leads by a pipe 84 to a connection 85 in the end of the shaft 31 leading to the fluid-actuated clutch. 38. A pipe 86 leads from the port 82 to a connection 87 in the end of the shaft 23 and.

forms communication with the air-controlled clutch 37. Valve passages 88 and 89 extend through the valve -78. The assage 88 is adapted to be brought into register with the port 81 and the passage 89 with the port 82 through the rocking of the valve, the ports 81 and 82 being a sufficient distance apart to give an extended travel in which the ports 88- and 89 are out of register with both the ports 81 and 82 for a purpose hereinafter described. An. annular groove 90 is arranged in the face of thevalve' an'd connects the exhaust port 83 with the ports 81 and-.82 except when the valve is swung to the extreme positions to bring the passages 88 and 89 into register withtheports 81 and 82.

The valve is controlled by a rock shaft 91 journale'd in a valve body 92, the valve body being secured tothe platform frame. The rock shaft is driven by a lever 93 connected by a link 94 with a rock arm 95. The rock arm 95 is mounted on'a shaft 96.. A rock arm 95 is fixed on the shaft 96 and'connected by a link 98 with a rock arm 99. The

rock arm 99 is mounted on a shaft 100 and is adapted to be controlled by a hand lever 101 arranged onthe platformadjacent to the control levers 60 and 75".

' It is desirable to control the brake for the drum 14 so as to hold the dipper stick in any position that may be desired and it is desirable to control the brake without additional levers and in the present invention this is accomplished with the same control lever as controls the valve 78 and con- 'sequently the clutches controlling the drum -naled on a pin 105 and has a pin 107 on which the eye 108 on the free end of the brake band is mounted. It will readily be seen that by swinging the lever 106 the brake band may be tightened or loosened as desired. A push pin 109 extends from the lever 106 to a piston 110 arranged in a cylinder 110. The device just described forms a ram for actuating the brake lever. A spring 111 returns'the lever and releases the brake when the air is released from the ram. Air is delivered to the ram through a pipe 112.

Air to the ram is controlled by a brake valve. The pipe 112 leads to a. passage 113 in the brake valve body 114. A supply pipe 115 leads from the pipe 80 to a passage 116 in the valve body. A check valve 117 operates on a seat 118 in the body and when released closes the air supply leading through the passage 116, past the seat 118 to the passage 113 and hence to the ram. A trip pin 11'8 is adapted to trip the check valve 117. The trip pin is mounted on a plunger 119 carried in a guide passage 120. The plunger is reduced in the intermediate portions forming an annular passage around it and has the guide head 119-with openings 121 to permit the passage of air to the guide passage and the passage 113. A valve 122 is arranged on the lower end of the plunger 119 and closes on a seat 123 on the valve body so that when the plunger is raised to trip the valve 117 the valve head 122 closes the lower end of the guide passage 120.

The plunger 119 rests on a plunger extension 124. The plunger extension is carhead 126" forming a shoulder-13h at the mounted in an opening 135 in the valve body and extends into" the slot 132. The shaft is cut away t its inncrgend-forming:a flat 135 which when turned upwardlv forms a stopfor the-shoulder spring 136? is arranged in the valvehod'y and above the of the valve 117 but whenthe shaft 134 is zswung so that theround part of the shaft is upwardly "as shown inFig. 9 the valve-i 117isjtrippe'd and the valven122, is closed;

A hand lever 137 is arranged on the" shaft '134 by which it may" be readily swung and the shaft is held in the opening by a cap 138/ 3' A cam 139. is mounted on the link 94: and .is'in the path of the cam 131 when the lever 95 issivungr throu-jghithe action of the control lever 101. Th'eflcaml itl is entirely disengaged from the cam 131 when either the valve passage "88 or'89 is in-register with the ports 81 or 82 respectively and the cam ,actionj control-1mg the brake is operative,

tl'ierefore, in the neutralposition. and the controlleverbetween those positions ,which throw the air on to one or theother of the air clutches 37c and 38. The opcratom thereform if he wishes to set the brake swings the control lever after releasing: the clutches to an intermediate position Whicli'will set. the brake. In order to .appri-zethe operator of the right positioning of the cam 139. under the cam 131 to "lock the brake a flat isarra'ngedon' the top of the cam with a slight projection 140.. The oiie-rator can by; ,feel tell that the cam has reached'thefiat and when it reaches the shoulder 140 can know-that the brake isset-requiringr no further eti'ort so far as'holdlng the control -lever is concerned. 11 the, operator does not desire to set the brake and to have both clutches 37 and released he swings the valve snfiicientlv to bring the passage 88, or 89 out of register with the port 81 or 82 as the-case may be but does not bring" the cam 139 under the cam 140. The added movement :ior the passatre 88and 89 between the ports-81 and 82 permits of these several intermediatepositions of the control lever so asto control the clutches and brake as desired. vi .W'Vhatl claim as new is t 1 1'; In a control mechanism-thecombina- -clutchat each'extreme position and the brake at an intermediate position; and a sin 1e manually actuated means actuating t e valve mechanism.- r

2. Inra control mechanism, the combinationfof a controlled member; areversing de- 'I(C actuatimc the controlled member; fluid actuated clutches controlling the reversing devi ce;a brake for said controlled member; a valve mechanism controlling the clutches, said valve mechanism-"setting a clutch at each extreme position and the brake at an intermediate position and having neutral positionsr'elie'ving both clutches and the brake between each extreme position and the intermediate position; and a single manually actuated means actuating the valve mechan-.

ism. V

3. In a control mechanism,the combination of a controlled member; a reversing device actuating the controlled member; fluid actuated clutches controlling the reversing iIncl-medinterposition; and a single manually -,-aetuate l means actuating the valve mechanisnnsaul valve mechanlsm and means 1ndicatingr from .a sense of touch the setting of the valve u'lechanisi'n.

4. In a control mechanism, the comhinanon of a controlled member; a reverslng dedevice a brake for said controlled member; 4 a valve mechanism controlling the clutches,

Mill

vice actuating the controlled member; fluid v actuated: clutches controlling the reversing device; a brake for said controlled'memher; a valvemechanism controlling :the clutches,

said valve mechanism setting a clutch at each extreme position .the brake at an mtermcd'late posltion and having neutral positions relieving both clutches and the brake between each extreme position and the intermediate position; and a single manually actuated means actuating the valve mech anism, said valve mechanism comprising: devices varying the resistance to its movement indicating by the sense of touch on said means the setting of the valve mechanism.

In a control mechanism, the combination of a controlled member; a reversingvdevice, actuat'ingthe controlled member; fluid actuated clutches controlling the reversing device: a brake for said controlledmember; a valve mechanism. comprising a valve device controlling theclutches andsetting the samev at the extreme throw of the valve tion of a controlled membergfa reversing device actuating the controlled member; fluid actuatedclutches controlling the reversingr'device: a braketorsaid controlled incm-- her a "valve. mechanism c()I itrollirig the clutches, said valve mechanisms'etting a mechanismiand a cam actuatedvalve controlling th'epbrake the cam being engaged at 6. in a control"inechanismtthe combinin ,tion'of a controlledrmemberra reversing .valve device, controlling the clutches and setting the same at the extreme throvv of the brake mechanism; and a cam-actuated valve- I controlling the brake' the cam being engaged at an intermediate point in the throw of the valve mechanism with intervening neutral positions ot the valve mechanism between the extremes and the point at which the cam is engaged. said neutral positions releasing both the brake and the clutches.

7. In a control mechanism, the combination of a controlled member: a reversing device actuating the controlledmcmher; fluid actuated clutches controlling the reversing device; a'brake for said controlled deviccz.

a valvjemechanism comprising a valve devic controlling the clutchesand setting the same at the extremcthrow of the valve mechanis'rn; and a cam actuated valve controlling the brake, the cam hein g-engaged at an intermediate point in: the throw of the valve mechanism, the engagement of the cam indi- I eating to the touch the setting of the valve -mechanism to set the brake.

8. In a control mechanism, the combination of a controlled member; a reversing device actuating the controlled member; fluid actuated-clutches controlling the reversing device; abrake for said controlled device; a valve mechanism comprisinga rotary valve controlling the clutches and setting the same at the extremes of 'the throw of the valve mechanism; and a cam-actuated valve controlling the brake, the 'cam'being engaged at versing device; a brake for said controlled an intermediate part of the throw of the valve mechanism'and operating the camv with a throw from either direction, the re sistance of the cam indicating by'a sense of touch the position of the valve mechanism.

9. In a control mechanism, the combination of a controlled member: a reversing device actuating the controlled member; fluid actuated clutches/controlling the remember; a valve mechanism comprising a valve device controlling the clutches and setting the same at the extremethrow of the valve mechanism; a cam actuatedvalve coiy trollingthe brake, the cam being engaged at -an intermediate point/in the throw otthe'.

valve mechanism; and-a singlemanually actuated means foractuatmg the valve mechanism. Y

10. In a control mechanism; 'thecoinbination'of a controlled member; areversing device actuating. the-controlled member;

- fluid actuated clutches controlling the reversing device a brake for sa d controlled device a valve mechanism comprising avalve device controlling the clutches and, setting the same at the extreme throw of the valve mechavalve; :1 spring acting on the nism; a camactuating valve controlling the brake, the cam being engaged at an inter mediate point in the throw of the valve mechanisnn the engagement. of the cam indicating to the touch the setting of the valve mechanism to set the brake: and a single manually actuated means for actuating the valve mechanism.

11. In a control mechanism, the comhination of a controlled member: a reversing device actuating the controlled member; fluid actuated clutches controllingthc rcvcrsing device: a brake for said controlled member: a valve mcchanisi'n comprising a valve controlling the clutches and setting the same at the extreme of the throw of the valve mechanism; a check valve controlling the brake; and a *am actuated meanstripping the check valve to set the brake.

12. In a control mechanism the combination of a controlled member: a fluid actuated clutch controlling said member: a fluid actuated brake for said member; a, valve mechanism controlling the clutch and hralve; a single manually actuated means actuating the valve mechanism; and an independent means controlling the brake. l 13. In a control mechanisnt the combina tion of a controlled member; a reversing device actuating the controlled mem'ncr; fluid actuated clutches controlling the reversing device: a, brake for said controlled member; a valve mechanism controlling the 'clutches, said valve mechanism setting a clutch at each extreme position and the brake at an intermediate position; a single manually actuated means actuating the valve mechanism; and independent means controlling the brake while permitting the control of the clutches.

14. Inn control mechanism, the combination of a controlled member; a reversing de vice actuating the controlled member; tiuid actuated clutches controlling the reversing device; ahrake for said controlled member: a valvemechanism con'iprising a valve controlling the clutches and setting the same at the extremes of the throw of the valve mechanism; a valve controlling the brake comprisinga valve; a plunger operating the hmger to close the valve; and. a cam acting on the plunger and actuated at an intermediate point in the throw of the valve mechanism. 15. In a control mechanism, the combination of a controlled member: a reversing device. actuating the controlled member;

tripping themheelt relive; 5 v alve earried the 'plunger-epening and lelosingthe tlu-mving tl1e yam to l'ocltthe'plungee 1n position to open the valve independently of the cam. 3 f l 7 111-11! aeontrol n1echl1nisn1,'the combine-"- 1(5. ln a eontroljhieclmnism, the combina- Vlt'l ilt'lllllllll}! the qontrollexl member; fluid :n-tuzlt'erl 'rlu'teher; eontrollmg the reversing derive u hmke tm nhl eontrolletlmember; a valve Tll'tUlHHI-lfilll CUIHIH'ISIII LI a valve Con:

trolling: the (:lull'hes aml setting;- the'same at the extremes of the throw ofthevalre" mevlmnlem; a valve eon-trolling.the brake e mprxsmg plunger: :1 enhron the plunger el'igr lg'e l .alt an luternwrljnth Ppwltion of the throw of the valve mefh-anihin to open the valve to set :the brake; a spa-mg opposing the cam nmremenl; t1 slot'm the pl u'ngetjn ("um operating in the slot; and means for set my hand.

tionof '5; controlled member;- a; rerersing (1e v'ice aetuating the 'conti'olletlfmember; fluid:

netnuted clutches (-ontrolli ng the reversing devne; e, hrak'e for saul controlled member;

efehlvie mephnnismeom prising e vn'lve control-lmg lhe eliltch'es'aml settmg the same at theextreme of'the throw of the-valve :meelmnism; and a cam actuated .ve'lve controlling the brake, the cam being engaged at an intermediatepert of the throw of the valve mechanlsm unqhhnvmg a step thereon forholding-the valve 111' ()PQI'LPOSULIOD.

18. In a eontrol: mechanisnnthe e'ombinw tlon of a. controlled member; a rererslng de vice arthatiing the eontrolled member; fluid ell eetuated elut'ehes controlling the reversing 'rle\i res; e hrlalce for said controlled mem heme alve mechanismcomprising li vnlv'e eontrolhng the clutches z'mrl settmg the same I at the extreme of the throw of the valye mechanism; a ram actuated 'x'ali'eeontroh' hug the brake, the van; being. engaged at an. intermediate 1m rt of the'lthrow of the Velvemeeh'anismand having a'etep thereon for holding the Yal ve in-o1. e1\'-position; end

'an ohstruetimrinclicating to :Lsen'so of touch the positioningofjthe cam on the Step.

, In testimony whereof I have llmrennte DWIN J; AR STeoNG. 

